Pressure-sensitive adhesive agent for skin, pressure-sensitive adhesive sheet for skin, and face plate of ostomy appliance

Abstract

A pressure-sensitive adhesive agent for skin contains 2 to 35% by weight of a thermoplastic elastomer, 25 to 60% by weight of a hydrophilic polymer compound, 16 to 40% by weight of a softener, and 0.01 to 4.8% by weight of a physiologically active agent; and has a water absorption 3 hours after of 55 to 240% and a water absorption 24 hours after of 240 to 450%. A pressure-sensitive adhesive sheet for skin contains a base material and a layer of a pressure-sensitive adhesive agent for skin that contains 2 to 35% by weight of a thermoplastic elastomer, 25 to 60% by weight of a hydrophilic polymer compound, 16 to 40% by weight of a softener, and 0.01 to 4.8% by weight of a physiologically active agent and is formed on one side of the base material; and has a water absorption 3 hours after of 55 to 240% and a water absorption 24 hours after of 240 to 450%.

1 . A pressure-sensitive adhesive agent for skin, comprising: 2 to 35% by weight of a thermoplastic elastomer, 25 to 60% by weight of at least one hydrophilic polymer compound selected from the group consisting of sodium carboxymethylcellulose, pectin, karaya gum, and gelatin, 16 to 40% by weight of at least one softener selected from the group consisting of polyisobutylene, polyisoprene, polybutadiene, polybutene, styrene-isoprene rubber, ethylene-propylene rubber, styrene-ethylene-propylene rubber, and derivatives thereof, and 0.01 to 4.8% by weight of a sphingolipid, 1 to 30% by weight of oil, and 1 to 25% by weight of a tackifying resin; and having a water absorption 3 hours after immersion in physiological saline of 55 to 240% and a water absorption 24 hours after immersion in physiological saline of 240 to 450%. 
     
     
         2 . The pressure-sensitive adhesive agent for skin according to  claim 1 , wherein the sphingolipid is a hydrophilic physiologically active agent. 
     
     
         3 . (canceled) 
     
     
         4 . The pressure-sensitive adhesive agent for skin according to  claim 1 , wherein the thermoplastic elastomer is a hydrogenated styrene-butadiene rubber. 
     
     
         5 - 7 . (canceled) 
     
     
         8 . A pressure-sensitive adhesive sheet for skin, comprising: a base material and a layer of a pressure-sensitive adhesive agent for skin formed on one side of the base material; wherein the pressure-sensitive adhesive agent is defined by  claim 1 . 
     
     
         9 - 14 . (canceled) 
     
     
         15 . A pressure-sensitive adhesive sheet for a face plate of an ostomy appliance, comprising the pressure-sensitive adhesive sheet for skin according to  claim 8 . 
     
     
         16 . The pressure-sensitive adhesive sheet for a face plate of an ostomy appliance according to  claim 15 , wherein the surface of the layer of the pressure-sensitive adhesive agent adhering to the skin has a convex shape. 
     
     
         17 . The pressure-sensitive adhesive sheet for a face plate of an ostomy appliance according to  claim 15 , wherein a stoma inserting hole is formed in the central part of the sheet and the base material is not present in the area surrounding the hole. 
     
     
         18 . The pressure-sensitive adhesive sheet for a face plate of an ostomy appliance according to  claim 15 , wherein a stoma inserting hole is formed in the central part of the sheet and the base material surrounding the hole has a fragile portion. 
     
     
         19 . A face plate of an ostomy appliance, comprising the pressure-sensitive adhesive sheet for a face plate of an ostomy appliance according to  claim 15 .